Samuel cabot



' 18 paint or varnish.

UNITED STATES PATENT OFFICE.

SAMUEL GABOT, OF CANTON, MASSACHUSETTS, ASSIGNOB. TO

SAMUEL CABOT, INC., 01?

nosron, mssacnu'snr'rs, A CORPORATION or massncnusa'rrs.

. coe'rmo comrosrrxon.

No Drawing.

To all whom it may concern: Be it known that I, SAMUEL CABOT, a citizen of the United States, residing at Canton, county of Norfolk, Commonwealth of Massa- 5 chusetts, have invented certain new and useful Improvements in Coating Composition, of which the following is a specification.

The subject matter of my present inventlon is a novel product of individual character. This product results from a method o fchlorinating certain non-crystalline liquid hydrocarbons or mixtures of them and is at present at least found to be especially adapted to be used as a aint' or as a body in a he substance is transparent and light colored -and is produced as a viscous or solid mass capable of solution in coal tar naphtha in all proportions. It possesses a non-combustible or fire proof feature on account of its high state of chlorination and is commercially of great practical value as a coating body.

, I am aware that crystalline, wax or tarry products have been secured by ch orinating certain coal tar products, but these waxy or tarry substances have not been suitable for use as a paint or varnish. This is because these substances have been of a nature inca able of suitable spreading and'lacking so ubility, toughness or transparency or have been dark and unsuited for use either alone or in mixture with any of the lighter pi ents. v

y product on the other hand is of a light color and su tially free from any dark colored polymerization or decom osition products, is soluble in coal tar nap tha'in all proportions, forms a tough coating when spread thin on a-surface and is tran arent so that it is capable of producing ighter shades while at the, same time being exceedingly rich in chlorin and highly resistent to combustion. 1 A characteristic form of 111 product is a light amber colored material which is practically insoluble in water, but readil soluble in benzol or coal tar naphthacharacteristic form of my substance is produced from the non-crystalline parts of aromatic hydrocarbon, as for example, creosote oil from which the naphthalene has been crystallized as by refrigeration. As is well known the chlorination of ahydrocarbon Specification of Iietters Patent.

Application filed September 18, 1918. Serial No. 120,811.

. must be effected without generation of excessive heat which would effect polymerization or decomposition, and I find that this characteristic roduct is produced by a slow rogressive chorin substitution 'of the hyrogen atoms of the non-crystalline hydrocarbon. The method of producing this characteristic substance is the subject matter of an a lication filed by me, June 5, 1914, Serial 0. 843,303, and entitled Process of chlorinating hydrocarbons."

As an example of a commercial product characteristic of m invention I give the-following: tenparts y weight of non-crystallized water gas tar distillate, as for example,

creosote oil refrigerated to crystallize the naphthalene anthracene or other crystalline,

or wax like bodies, highly chlorinatedat a temperature below the point of polymerization or 'decom osition to efi'ect a. gradual rogressive chihrin substitution of the hyrogen atoms. At this st e the product is a viscous mass which har sure to the air. If, as is usually the case, a liquid form is required 10 parts are thinned with 14.- parts of coal tar naphtha to which may be added a suitable amount of high boiling creosote oil. In case a dark or black coating is desired pitch from coal tar, water gas tar or any asphaltum ma be added in place of the creosote oil. his

. forms the vehicle in which may be round 16 parts more 'or less of any suitab e Patented July 1, 1919.

BIlS upon BXpO- i ment even one of light color. The result is a product which forms a coating such as a palnt which is substantially non-combustible and fire resistent.

In the practice of m invention various modifications may be ad in the relative pro ortipning of the quantities of pigment or t mg substance, and may be somewhat varied. T e chief characteristic property of such a roduct in accordance with my invention is the highly chlorinated non-crystall ne hydrocarbon product of characteristic l ght color and free from dark polymerizat1on or decomposition products on which accure by Letters Patent is:

sop

count it may be associated with a light pigment with a resultant non-combustible characteristic for the whole.

What I therefore claim and desire to se- 1. A light colored, substantially noncombustible coating composition, incapable of distillation Without partial decomposition, containing chlorinated, non-crystalline hydrocarbon products, containing a plural ity of chlorin atoms, substantially free from polymerization or decomposition products.

2. A light colored, substantially non-combustible coating composition, consisting of a highly chlorinated non-crystalline hydrocarbon product substantially free from polymerization or decomposition products, and a pigment.

3. A light colored and transparent novel product of, hydrocarbon chlorinizations, soluble in an organic solvent, free fromappreciable amounts of dark colored polymerization and decomposition roducts and being at least partially incapa le of being volatilized Without decomposition.

4. A transparent and light colored coating product of hydrocarbon chlorinizations, soluble in an organic solvent free from dark colored polymerization and decomposition roducts, anda volatile solvent.

5. Asubstantially non-combustible coating composition consisting of ahighly chlorinated non-crystalline hydrocarbon product, a volatile solvent and an extender soluble neonate in it and non-volatile at ordinary temperatures.

6. A light colored, transparent coating composition, comprising a novel product, or hydrocarbon chlorinizations soluble in an organic solvent, free from dark colored polymerization and decomposition products, a volatile solvent and an extender consisting of aromatic products non-volatile at ordinary temperatures.

7 A paint comprising a light colored and transparent product of hydrocarbon chlorinizations, soluble in an aromatic solvent free from dark colored polymerization and decomposition products, a volatile solvent, and high boiling creosote oil and a pi ent.

8. A paint comprising a novel 11g t colored and transparent product, soluble in an aromatic solvent, free from dark colored polymerization and decomposition products, a volatile solvent and a plgment.

9. A substantially non-combustible coating composition chlorinated, noncrystalline hydrocarbon product, a volatile solvent and an extender comprising aromatic products non-volatile at ordinary temperatures. I

In testimony whereof I afix my signature in presence oftvvo witnesses.

SAMUEL CABOT.

Witnesses HORACE D. BRADFORD, WILLIAM L. Hsnrrnnn.

consisting of a highly.

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